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Java example source code file (NoOpUpdater.java)

This example Java source code file (NoOpUpdater.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

baseupdater, equalsandhashcode, gradientupdater, gradientupdateraggregator, indarray, layer, noopaggregator, noopgradientupdater, noopupdater, noopupdateraggregator, override

The NoOpUpdater.java Java example source code

package org.deeplearning4j.nn.updater;

import lombok.EqualsAndHashCode;
import org.deeplearning4j.nn.api.Layer;
import org.deeplearning4j.nn.api.Updater;
import org.deeplearning4j.nn.updater.aggregate.UpdaterAggregator;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.learning.GradientUpdater;
import org.nd4j.linalg.learning.GradientUpdaterAggregator;

@EqualsAndHashCode
public class NoOpUpdater extends BaseUpdater {
	private NoOpGradientUpdater updater;
	
	@Override
	public void init() {

	}

	@Override
	public GradientUpdater init(String variable, INDArray gradient, Layer layer) {
		GradientUpdater updater = updaterForVariable.get(variable);
        if (updater == null) {
            updater = new NoOpGradientUpdater();
            updaterForVariable.put(variable,updater);
        }
        return updater;
	}

	@EqualsAndHashCode
	private static class NoOpGradientUpdater implements GradientUpdater {
		@Override
		public void update(Object... args) {
			//No op
		}

		@Override
		public INDArray getGradient(INDArray gradient, int iteration) {
			return gradient;
		}

		@Override
		public GradientUpdaterAggregator getAggregator(boolean addThis) {
			return new NoOpUpdaterAggregator();
		}
	}

	@Override
	public UpdaterAggregator getAggregator(boolean addThis){
		return new NoOpAggregator();
	}

	@EqualsAndHashCode(callSuper=true)
	protected static class NoOpAggregator extends BaseUpdater.UpdaterAggregatorImpl {
		@Override
		public Updater getUpdater() {
			return setUpdaterState(new NoOpUpdater());
		}
	}

	@EqualsAndHashCode
	private static class NoOpUpdaterAggregator implements GradientUpdaterAggregator{
		@Override
		public GradientUpdater getUpdater() {
			return new NoOpGradientUpdater();
		}

		@Override
		public void aggregate(GradientUpdater updater) {
			//No op
		}

		@Override
		public GradientUpdaterAggregator combine(GradientUpdaterAggregator other) {
			return this;
		}
	}


}

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